Arrowstreet Capital
NBBK icon

Arrowstreet Capital’s NB Bancorp NBBK Stock Holding History

Arrowstreet Capital’s Portfolio NBBK Stock Details NBBK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$760K Sell
35,981
-4,295
-11% -$88.4K ﹤0.01% 1689
2026
Q1 		$849K Buy
40,276
+21,410
+113% +$450K ﹤0.01% 1590
2025
Q4 		$374K Buy
+18,866
New +$359K ﹤0.01% 1718

Other funds holding NBBK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AC
AltraVue Capital Bellevue, Washington $1.39B AUM 53.77% 1-Year Est. Return
PP
Pertento Partners London, United Kingdom $1.86B AUM 53.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
TCM
Tieton Capital Management Yakima, Washington $348M AUM 45.13% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $34.3B AUM 22.63% 1-Year Est. Return

Arrowstreet Capital's NBBK Position: Q2 2026 in Review

Arrowstreet Capital reduced its NB Bancorp (NBBK) stake by 11% in Q2 2026, selling an estimated $88.4K and leaving 35,981 shares worth $760K. The position accounts for ﹤0.01% of the portfolio, ranked #1689.

Arrowstreet Capital first reported a position in NBBK in Q4 2025 and has held it in 3 quarters since. The position peaked at $849K in Q1 2026. 161 funds tracked by Wall St. Rank hold NBBK as of Q2 2026.

  • Arrowstreet Capital held 35,981 shares of NB Bancorp worth $760K as of Q2 2026.
  • Arrowstreet Capital sold 4,295 NB Bancorp shares in Q2 2026, an estimated $88.4K.
  • NB Bancorp made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1689 holding.
  • Arrowstreet Capital first reported a position in NB Bancorp in Q4 2025 and has held it in 3 quarters since.
  • Arrowstreet Capital's NB Bancorp position peaked at $849K in Q1 2026.
  • 161 funds tracked by Wall St. Rank held NB Bancorp as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.